/usr/include/claw/impl/bitmap_reader.tpp is in libclaw-graphic-dev 1.7.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 | /*
CLAW - a C++ Library Absolutely Wonderful
CLAW is a free library without any particular aim but being useful to
anyone.
Copyright (C) 2005-2011 Julien Jorge
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
contact: julien.jorge@gamned.org
*/
/**
* \file bitmap_reader.tpp
* \brief Template classes of the claw::graphic::bitmap::reader class.
* \author Julien Jorge
*/
#include <cassert>
#include <algorithm>
#include <claw/exception.hpp>
/*----------------------------------------------------------------------------*/
/**
* \brief Constructor.
* \param palette The color palette to convert the pixels.
* \param img The image we're filling.
*/
template< bool Coded4Bits >
claw::graphic::bitmap::reader::
rle_bitmap_output_buffer<Coded4Bits>::rle_bitmap_output_buffer
( const color_palette_type& palette, image& img )
: m_palette(palette), m_image(img), m_x(0), m_y(m_image.height() - 1)
{
} // bitmap::reader::rle_bitmap_output_buffer::rle_bitmap_output_buffer()
/*----------------------------------------------------------------------------*/
/**
* \brief Go to the begining of the next line to fill.
*/
template< bool Coded4Bits >
void claw::graphic::bitmap::reader::
rle_bitmap_output_buffer<Coded4Bits>::next_line()
{
assert( m_y > 0 );
m_x = 0;
--m_y;
} // bitmap::reader::rle_bitmap_output_buffer::next_line()
/*----------------------------------------------------------------------------*/
/**
* \brief Move the cursor horizontally and vertically.
* \param x Horizontal displacement.
* \param y Vertical displacement.
*/
template< bool Coded4Bits >
void claw::graphic::bitmap::reader::
rle_bitmap_output_buffer<Coded4Bits>::delta_move
(unsigned char x, unsigned char y)
{
assert( m_x + x < m_image.width() );
assert( m_y + y < m_image.height() );
m_x += x;
m_y += y;
} // bitmap::reader::rle_bitmap_output_buffer::delta_move()
//******************************************************************************
/*----------------------------------------------------------------------------*/
/**
* \brief Get the type of the following data in the input buffer, eventually
* apply the special codes.
* \param input The input stream (the bitmap file).
* \param output The output stream (the bitmap image).
*/
template< typename OutputBuffer >
void claw::graphic::bitmap::reader::rle_bitmap_decoder<OutputBuffer>::read_mode
( file_input_buffer& input, output_buffer_type& output)
{
this->m_mode = this->stop;
bool ok = true;
if ( input.remaining() < 2)
ok = input.read_more(2);
if (ok)
{
unsigned char key, pattern;
key = input.get_next();
pattern = input.get_next();
// compressed data, next byte is the pattern
if (key > 0)
{
this->m_mode = this->compressed;
this->m_count = key;
this->m_pattern = pattern;
}
else switch( pattern )
{
// end of line
case 0 : output.next_line(); read_mode(input, output); break;
// end of file
case 1 : this->m_mode = this->stop; break;
// delta move
case 2 :
{
if ( input.remaining() < 1 )
ok = input.read_more(1);
if (ok)
{
unsigned char x, y;
x = pattern;
y = input.get_next();
output.delta_move(x, y);
read_mode(input, output);
break;
}
}
// raw data
default: this->m_mode = this->raw; this->m_count = pattern; break;
}
}
} // bitmap::reader::rle_bitmap_decoder::read_mode()
/*----------------------------------------------------------------------------*/
/**
* \brief Load uncompressed data from the file.
* \param f The file from which we're loading the bitmap.
* \param buffer_size Number of bytes needed to store one line of pixels.
* \param palette Color palette.
* \param pixel_convert A method to convert one line of pixels from the file to
* a line of the current bitmap.
*
* \remark The Convert type method must take this four parameters in this order:
* # scanline& destination line,
* # const char* input buffer (contains one line of the bitmap),
* # const color_palette_type& palette The color palette of the file,
*/
template<typename Convert>
void claw::graphic::bitmap::reader::load_rgb_data
( std::istream& f, unsigned int buffer_size, const color_palette_type& palette,
const Convert& pixel_convert )
{
unsigned int line;
// lines are 4-bytes aligned, so adjust buffer's size.
if (buffer_size % 4 != 0)
buffer_size += 4 - buffer_size % 4;
char* buffer = new char[buffer_size];
for (line = m_image.height(); (line>0) && !f.eof(); )
{
--line;
f.read(buffer, buffer_size);
pixel_convert( m_image[line], buffer, palette );
}
delete[] buffer;
if ( f.rdstate() != std::ios_base::goodbit )
throw claw::bad_format("bitmap::reader::load_data");
} // bitmap::reader::load_data()
|